SecurityTrails

API

Domain & IP Intelligence API for WHOIS & DNS Records

Overview

The SecurityTrails API offers RESTful access to domain and IP intelligence data, including current/historical WHOIS records, DNS records (A, MX, NS, TXT), domain ownership changes, and IP geolocation. Key endpoints include domain lookup (/domain/{domain}), IP lookup (/ip/{ip}), WHOIS history (/domain/{domain}/whois_history), and DNS history (/domain/{domain}/dns_history). Responses are JSON-formatted. Use cases: threat hunting, fraud prevention, domain portfolio monitoring, compliance audits, and competitive intelligence for organizations needing deep visibility into internet assets.

Example Integration (JavaScript)

script.js JS


fetch('https://securitytrails.com/corp/apidocs')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Response Format
Historical WHOIS & DNS Records
Domain & IP Lookup
Threat Intelligence Insights

Frequently Asked Questions

? Is SecurityTrails API free to use?

Yes, it offers a freemium model with a free tier (limited monthly requests) and paid plans for expanded data access and higher rate limits.

? Does it require an API Key?

Yes, all API requests need a valid API key, which can be obtained by signing up for an account on the SecurityTrails website.

? What is the response format?

All endpoints return data in JSON format, which is easy to parse and integrate into applications.

Top Alternatives

WhoisXML API Search Google

DomainTools API Search Google

IPinfo API Search Google

Tool Info

Pricing Freemium

Category Security

Platform Public API

Pros

⊕ Comprehensive domain/IP data set
⊕ Detailed historical records
⊕ Well-documented endpoints
⊕ Scalable enterprise plans

Cons

⊖ Freemium tier has strict rate limits
⊖ Premium plans are costly for small teams
⊖ Requires API key authentication
⊖ Limited free access to historical data